Home Run Restorations blog has some great advice on home improvments. one that cought my eye is a post about Evaluating Improvements.
In this post it they talk about what to consider before starting a renovation of any room in your home including your bathroom with the final foot note of:
Be Smart:
Spending more money does not always guarantee a greater amount of value will be added to the home. By evaluating the improvements and assessing the potential return, you are more likely to make the most bang for the buck!
Head over and give it a read Evaluating Improvements.